Folks: I just figured it out!
I just totally blew away my entire phone (factory reset, blew away SD card, everything) and installed my apps one by one, and after I installed each app, I did the Control + A test.
And I figured out which application was causing it:
It's an app I paid for (and sadly, I love love love love). I uninstalled it and the problem went away. Bingo!
I'm not done re-installing all of my other apps, and I will still continue to install them one by one and doing the Control+A test after each one just to see if more than one app was causing it.
But HOLY HALLELUJAH, this was making me mental.
You should have seen the insane dance I just did in the kitchen yelling "IN YOUR FACE, BUSINESS CALENDAR!"
I'm not a sane gal.
Anyway, I'll continue testing my other apps... but if you use Business Calendar, definitely uninstall it.
(Droid4, Verizon Wireless, not rooted.)